Trane RT-SVX10C-EN specifications O/A Sensor & Tubing Installation, Units with StatitracTM, Figure

Installation (Continued)

O/A Sensor & Tubing Installation Figure 3-9

An Outside Air Pressure Sensor is shipped with all units de- signed to operate on variable air volume applications or constant volume units with 100% modulating exhaust w/ Stratitrac.

On VAV systems, a duct pressure transducer (3U60) and the outside air sensor is used to control the discharge duct static pressure to within a customer-specified parameter.

On CV & VAV units equipped with 100% modulating ex- haust w/Stratitrac, a space pressure transducer (3U62) and the outside air sensor is used to control the exhaust fan and dampers to relieve static pressure, to within a customer- specified parameter, within the controlled space. Refer to Figure 3-9 and the following steps to install the sensor and the pneumatic tubing.

1.Remove the O/A pressure sensor kit located inside the filter section. The kit contains the following items;

O/A static pressure sensor with sensor mounting bracket

2' of 3/16" O.D. pneumatic tubing Mounting hardware

2. Using two #10-32 x 1-3/4" screws provided, install the sensor's mounting bracket to the factory installed bracket (near the filter section).

3. Using the #10-32 x 1/2" screws provided, install the O/A static pressure sensor vertically to the sensor bracket.

4. Remove the dust cap from the tubing connector located below the sensor in the vertical support.

5. Attach one end of the 2' x 3/16" O.D. factory provided pneumatic tubing to the sensor's top port, and the other end of the tubing to the connector in the vertical support. Discard any excess tubing.

Units with StatitracTM:

6. Open the filter access door, and locate the DSP control devices illustrated in Figure 3-9. There are three tube connectors mounted on the left of the solenoid and transducers. Connect one end of the field provided 3/16" O.D. pneumatic tubing for the space pressurization con- trol to the bottom fitting. Route the opposite end of the tubing to a suitable location inside the building. This lo- cation should be the largest open area that will not be af- fected by sudden static pressure changes.

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